U.S. patent application number 15/797321 was filed with the patent office on 2018-05-03 for sunscreen compositions.
This patent application is currently assigned to Australian Gold, LLC. The applicant listed for this patent is Australian Gold, LLC. Invention is credited to Maxine Johnson, Pamela Johnson, Brookelynn Liegibel, Angie H. Provo, Hillary Leonora Rebollar, Kristen Steinbrook.
Application Number | 20180116925 15/797321 |
Document ID | / |
Family ID | 60580015 |
Filed Date | 2018-05-03 |
United States Patent
Application |
20180116925 |
Kind Code |
A1 |
Johnson; Maxine ; et
al. |
May 3, 2018 |
SUNSCREEN COMPOSITIONS
Abstract
The present disclosure relates to compositions which provide UV
protection to the skin when applied. In certain embodiments, the
present disclosure comprises one or more mineral sunscreens
formulas.
Inventors: |
Johnson; Maxine; (Arizona
City, AZ) ; Provo; Angie H.; (Carmel, IN) ;
Rebollar; Hillary Leonora; (Westfield, IN) ; Johnson;
Pamela; (Whitestown, IN) ; Steinbrook; Kristen;
(Indianapolis, IN) ; Liegibel; Brookelynn;
(Franklin, IN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Australian Gold, LLC |
Indianapolis |
IN |
US |
|
|
Assignee: |
Australian Gold, LLC
Indianapolis
IN
|
Family ID: |
60580015 |
Appl. No.: |
15/797321 |
Filed: |
October 30, 2017 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
62496856 |
Oct 31, 2016 |
|
|
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61K 8/064 20130101;
A61Q 17/04 20130101; A61K 8/891 20130101; A61K 8/27 20130101; A61K
8/29 20130101 |
International
Class: |
A61K 8/29 20060101
A61K008/29; A61K 8/27 20060101 A61K008/27; A61K 8/891 20060101
A61K008/891; A61K 8/06 20060101 A61K008/06; A61Q 17/04 20060101
A61Q017/04 |
Claims
1. A composition of matter comprising: about 4% (w/w) titanium
dioxide and about 4% (w/w) zinc oxide in an water in oil emulsion
having a sun protection value of greater than or equal to about
50.
2. The composition of matter of claim 1, further comprising, one or
more silicone polymers.
3. The composition of matter of claim 1, wherein said composition
does not exhibit phase inversion when applied to the skin.
4. The composition of matter of claim 1, further comprising iron
oxide.
5. The composition of claim 1, further comprising caramel.
6. A composition of matter consisting of, 4.0% (w/w) titanium
dioxide, 4.0% (w/w) zinc oxide, 0.3% (w/w) alumina, 0.1% (w/w) shea
butter, 0.4% (w/w) caprylyl glycol, 2.5% (w/w) cetyl PEG/PPG-10/1
dimethicone, 39.5% (w/w) cyclopentasiloxane, 1% (w/w) dimethicone
crosspolymer, 0.1% (w/w) disodium EDTA, 2.3% (w/w) disteardimonium
hectorite, 0.01% (w/w) Eucalyptus Globulus leaf extract, one or
more fragrances, 5.1% (w/w) glycerin, 1.3% (w/w) hexyl laurate,
0.1% (w/w) panthenol, 1.7% (w/w) PEG-10 dimethicone, 0.4% (w/w)
phenoxyethanol, 1% (w/w) polyglyceryl-4 isostearate, 2% (w/w)
polymethylsilsesquioxane, 3% (w/w) silica, 0.1% (w/w) squalane, 0.4
(w/w) stearic acid, one or more fruit or flower extracts, 0.2%
(w/w) tocopheryl acetate, and water.
7. A method for reducing ultraviolet radiation from reaching human
skin comprising the act of: topically applying to said human skin
the composition of claim 1.
8. A method for increasing the sun protection factor (SPF) of a
consumer product comprising one or more silicone polymers relative
to a consumer product without a silicone polymer, comprising the
acts of: providing one or more mineral sunscreens; providing one or
more silicone polymers; providing water; and creating a water in
oil emulsion comprising said one or more mineral sunscreens, said
one or more silicone polymers, and said water.
9. The method of claim 8, wherein said one or more mineral
sunscreens comprises less than or equal to about 10% (w/w) of the
resulting water in oil emulsion.
10. The method of claim 8, wherein said one or more mineral
sunscreens comprises less than or equal to about 8% (w/w) of the
resulting water in oil emulsion.
11. The method of claim 8, wherein said one or more mineral
sunscreens comprises less than or equal to about 6% (w/w) of the
resulting water in oil emulsion.
12. The method of claim 8, wherein said one or more mineral
sunscreens comprises less than or equal to about 4% (w/w) of the
resulting water in oil emulsion.
13. The method of claim 8, wherein said one or more mineral
sunscreens comprises titanium dioxide or zinc oxide.
14. The method of claim 8, wherein said mineral sunscreen comprises
titanium dioxide.
15. The method of claim 8, wherein said mineral sunscreen comprises
zinc oxide.
16. A composition of matter comprising: about 3% (w/w) titanium
dioxide and about 3% (w/w) zinc oxide in an water in oil emulsion
having a sun protection value of greater than or equal to about
30.
17. A composition of matter comprising: about 1.75% (w/w) titanium
dioxide and about 3% (w/w) zinc oxide in an water in oil emulsion
having a sun protection value of greater than or equal to about 15.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit of U.S. Provisional
Application No. 62/496,856 filed Oct. 31, 2016, which is hereby
incorporated by reference in its entirety.
FIELD OF THE INVENTION
[0002] The present disclosure relates to improved sunscreen
compositions.
BACKGROUND
[0003] Ultraviolet radiation ("UV") is the name given to the
portion of the electromagnetic radiation that occurs at wavelengths
shorter than visible light. The wavelengths that comprise the UV
spectrum are typically understood to be between about 400 nm and
about 290 nm. Sunlight comprises two UV regions, the UVA region and
the UVB region. UVA is generally understood to be between about 400
nm and about 320 nm, while UVB is generally understood to be
between about 320 nm and about 290 nm. Because the depth that
electromagnetic waves penetrate substrates, e.g., skin, is related
to the wavelength of the electromagnetic radiation, UVA radiation
penetrates deeper than UVB radiation.
[0004] Both UVA and UVB rays can cause tanning of the skin and
overexposure can cause reddening and/or potential skin damage.
Sunscreen compositions can be used to reduce the skin's exposure to
UVA and UVB radiation. Sunscreen compositions that block UVA and
UVB radiation are typically called "wide-spectrum" sunscreens.
[0005] To measure the reduction in transmission of UV radiation by
a composition, the "sun protection factor" or "SPF" is often used.
The SPF of a composition is the inverse of the fraction of UV rays
that reach the skin. It is common for dermatologists to recommend
compositions with SPF values of greater than or equal to about
15.
[0006] There are two basic approaches to formulating the active
ingredients in a sunscreen. In one approach, "natural" or "mineral"
sunscreen compositions comprise active ingredients of titanium
dioxide and zinc oxide. These inorganic minerals form a physical
barrier and reflect UV radiation before it reaches the skin. In the
other approach, "chemical sunscreens" include, but are not limited
to, active ingredients such as oxybenzone, octinoxate, octisalate
and/or avobenzone. Chemical sunscreens are absorbed by the skin and
reduce UV exposure of the skin by absorbing the UV radiation and
converting this energy into heat or other forms of energy. There
are various pros and cons to each approach. For example, natural
sunscreens are less oily, are harder to wash off, and are believed
to be less allergenic, yet mineral compositions are often difficult
to effectively spread uniformly on the skin. Chemical sunscreens,
in comparison, are easier to spread for uniform coverage and may be
easier to formulate and mix with other ingredients.
[0007] There remains a need for sunscreen compositions, including
sunscreen compositions with improved rheological properties.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] FIG. 1 shows a digital image of Panelist A's arm with two
compositions applied side-by-side and after initial
application.
[0009] FIG. 2 shows a digital image of Panelist A's arm with two
compositions applied side-by-side and spread for use.
[0010] FIG. 3 shows a digital image of Panelist B's arm with two
compositions applied side-by-side and after initial
application.
[0011] FIG. 4 shows a digital image of Panelist B's arm with two
compositions applied side-by-side and spread for use.
[0012] FIG. 5 shows a digital image of Panelist C's arm with two
compositions applied side-by-side and after initial
application.
[0013] FIG. 6 shows a digital image of Panelist C's arm with two
compositions applied side-by-side and spread for use.
[0014] FIG. 7 shows a digital image of two compositions applied to
the arms of Panelists A, Panelist B, and Panelist C.
SUMMARY
[0015] In certain embodiments, the present disclosure comprises
mineral sunscreen compositions formulated as water in oil emulsions
with silicon-containing polymers present. The compositions do not
exhibit phase inversion when applied to the skin, allowing the
compositions to be more easily spread uniformly on the skin. The
formulations encourage more efficient and effective use of the
sunscreen by consumers, translating to a lower volume of sunscreen
used by the consumer to obtain a desired SPF protection. In example
embodiments, a low concentration of active mineral sunscreen
ingredients can be used to achieve a surprisingly high SPF
efficacy.
[0016] Compositions of the present disclosure exhibit surprising
results in that a lower concentration of natural sunscreens is
needed in the composition to observe similar sun protection
factors. Additionally, compositions of the present disclosure may
exhibit improved rheological properties, including, but not limited
to easier application as the compositions are spread over the
skin.
[0017] Selected embodiments may comprise pigments of iron oxide
and/or mixtures of iron oxide. The combination helps reduce
undesired whiteness or chalkiness that is often associated with
mineral sunscreens. The resulting combination may instead apply a
cosmetic tint in a selected color and hue to the skin, as
determined by the pigment added.
[0018] Additional embodiments of the invention, as well as features
and advantages thereof, will be apparent from the descriptions
herein.
DETAILED DESCRIPTION
[0019] For the purposes of promoting an understanding of the
principles of the disclosure, reference will now be made to certain
embodiments and specific language will be used to describe the
same. It will nevertheless be understood that no limitation of the
scope of the disclosure is thereby intended, such alterations and
further modifications, and such further applications of the
principles of the disclosure as described herein being contemplated
as would normally occur to one skilled in the art to which the
disclosure relates. Additionally, in the detailed description
below, numerous alternatives are given for various features. It
will be understood that each such disclosed alternative, or
combinations of such alternatives, can be combined with the more
generalized features discussed in the Summary above, or set forth
in the embodiments described below to provide additional disclosed
embodiments herein.
[0020] In certain embodiments, the present disclosure comprises
mineral sunscreen compositions formulated as water in oil emulsions
with silicon-containing polymers present. The compositions do not
exhibit phase inversion when applied to the skin, allowing the
compositions to be more easily spread uniformly on the skin. The
formulations encourage more efficient and effective use of the
sunscreen by consumers translating to a lower volume of sunscreen
used by the consumer to obtain a desired SPF protection. In example
embodiments, a low concentration of active mineral sunscreen
ingredients can be used to achieve a surprisingly high SPF
efficacy.
[0021] Compositions of the present disclosure exhibit surprising
results in that a lower concentration of natural sunscreens is
needed in the composition to observe similar sun protection
factors. For example, as typically employed, when 5% (w/w)
TiO.sub.2 is used, an SPF value of 3.2 is observed and when 5%
(w/w) ZnO is used, an SPF of 6 is observed. As will be discussed
below, in embodiments of the present disclosure where about 4%
(w/w) TiO.sub.2 and about 4% ZnO (w/w) are used, an SPF value of 50
is observed. This high level of protection from the sun, observed
while using comparatively less sunscreen ingredients (10% versus 8%
total TiO.sub.2 and ZnO) in the formulation is surprising and
particularly efficacious. Other examples of the typical sun
protection typically observed can be found in certain product
literature relating to natural sunscreens. For example, product
literature from Vizor indicates that for ultrafine uncoated ZnO 1.3
to 1.7 SPF units can be observed for 1% of the ZnO ingredient.
(Vizor product literature, http://vizorsun.com/super-zinc-1000/).
Other examples include that for Super Zinc.RTM. 1000 3.0 to 3.3 SPF
units can be observed for 1% of the ZnO ingredient in Super
Zinc.RTM. 1000. (Vizor product literature,
http://vizorsun.com/super-zinc-1000/). From these data in the
product literature, it can be calculated that for ultrafine
uncoated ZnO alone to achieve an SPF of 50, almost 30% ultrafine
uncoated ZnO would be needed, and for Super Zinc.RTM. alone to
achieve an SPF of 50, 15% SuperZinc.RTM. would be needed.
Embodiments of the present disclosure, for example, Example 1, when
4% of ZnO and 4% of TiO2 are used, an SPF of 50 is observed for the
formulation. This unexpectedly low concentration of natural
sunscreens provides an SPF of 50 in the formulation of Example
1.
[0022] Additionally, compositions of the present disclosure may
exhibit improved rheological properties, including, but not limited
to easier application and/or by generating less friction as the
compositions are spread over the skin.
[0023] Compositions of the present disclosure may comprise low
levels of one or more natural and/or mineral sunscreen agents.
Natural and/or mineral sunscreen agents include, but are not
limited to, titanium dioxide (TiO.sub.2), and zinc oxide (ZnO). In
certain embodiments one or both of titanium dioxide and zinc oxide
may be present in a combined total concentration up to about 10% by
weight of the total composition. In certain embodiments one or both
of titanium dioxide and zinc oxide may be present in a combined
total concentration of 8% or less by weight of the total
composition. In certain other embodiments one or both of titanium
dioxide and zinc oxide may be present in a combined total
concentration of 6% or less by weight of the total composition.
[0024] In certain embodiments, titanium dioxide (TiO.sub.2) may be
present in a concentration between about 1% by weight and about 5%
by weight. In certain embodiments, zinc oxide (ZnO) may be present
in a concentration between about 1% by weight and about 5% by
weight. In certain embodiments, titanium dioxide is present in a
concentration less than about 4% by weight, either alone or in
combination with zinc oxide. In certain other embodiments, zinc
oxide present in a concentration less than about 4% by weight,
either alone or in combination with titanium dioxide. For example,
in certain embodiments with 4% titanium dioxide and 4% ZnO, an SPF
of 50 is achieved. In alternate embodiments, titanium dioxide and
zinc oxide are each present in a concentration less than about 3%
by weight, either alone or in combination. For example, in certain
embodiments with 3% titanium dioxide and 3% ZnO, an SPF of 30 is
achieved. In selected embodiments, the titanium dioxide and/or zinc
oxide particles have diameters that are in the micrometer
range.
[0025] Some embodiments may comprise pigments of iron oxide and/or
mixtures of iron oxide. Traditionally, mineral sunscreens with high
concentrations of active ingredients are visible with a whitish
color when applied to the skin. When iron oxide and/or iron oxides
are used with the mineral sunscreen ingredients, the combination
results in a solution which eliminates, reduces, and/or masks any
whiteness when applied. The resulting combination may become
virtually invisible on the skin or may instead apply a cosmetic
tint in a selected color and hue to the skin, as determined by the
amounts and proportions of pigment used.
[0026] In applying a sunscreen, a consumer typically applies a
quantity of the sunscreen to the skin, for example by pouring or
spraying a quantity directly onto exposed skin or by pouring a
quantity into their palm or onto their fingers and then
transferring the quantity to the skin surface. Typically, the
consumer manually spreads the sunscreen across the skin with a
rubbing motion, attempting to achieve uniform coverage. Traditional
sunscreens with high concentrations of mineral sunscreen
ingredients have a higher friction coefficient on the skin, making
the sunscreen more difficult to spread. This can lead to a consumer
not effectively spreading the sunscreen and, for example, missing
areas which are desired to be covered. Alternately, a consumer may
use an excess amount of sunscreen to ensure complete coverage, but
which may create waste and inefficiency. An excess amount applied
can also leave a whitish color on the skin, which maybe
undesired.
[0027] A novel aspect of the present composition is increased ease
for a consumer to uniformly spread the composition on the skin. The
compositions are water in oil emulsions and do not exhibit phase
inversion when applied to the skin. This allows the compositions to
be more easily spread uniformly on the skin. The formulations
encourage more efficient and effective use of the sunscreen by
consumers, translating to a lower volume of sunscreen used by the
consumer. Achieving uniform coverage more efficiently also allows
the composition to provide a desired SPF protection level with a
lower level of mineral active ingredients.
[0028] Compositions of the present disclosure may comprise
preservatives, one or more antioxidants, one or more pH modifiers,
one or more pH buffer systems, one or more fragrances, one or more
thickening agents, one or more emulsifying agents, one or more
antifungal agents, one or more antimicrobial agents, one or more
humectants, one or more emollients, one or more surfactants, one or
more sunscreens, and/or one or more solvents. The total quantity of
any one or more additives may be any suitable quantity as would be
employed by those of ordinary skill in the art.
[0029] Various moisturizing agents or humectants that may be
included in embodiments of the compositions of the present
disclosure include, but are not limited to, amino acids,
chondroitin sulfate, diglycerin, erythritol, fructose, glucose,
glycerin, glycerol polymers, glycol, dimethyl isosorbide,
1,2,6-hexanetriol, honey, hyaluronic acid, hydrogenated honey,
hydrogenated starch hydrolysate, inositol, lactitol, maltitol,
maltose, mannitol, natural moisturization factor, PEG-15
butanediol, polyglyceryl sorbitol, salts of pyrollidone carboxylic
acid, potassium PCA, propylene glycol, sodium glucuronate, sodium
PCA, sorbitol, sucrose, trehalose, urea, and xylitol, hydrogenated
castor oil, PEG-40 hydrogenated castor oil, PEG-20 methyl glucose
sesquistearate, PEG-40 sorbitan peroleate, PEG-5 soy sterol, PEG-10
soy sterol, PEG-2 stearate, PEG-8 stearate, PEG-20 stearate, PEG-32
stearate, PEG-40 stearate, PEG-50 stearate, PEG-100 stearate,
PEG-150 stearate, pentadecalactone, peppermint (mentha piperita)
oil, petrolatum, phospholipids, polyamino sugar condensate,
polyglyceryl-3 diisostearate, polyquaternium-24, polysorbate 20,
polysorbate 40, polysorbate 60, polysorbate 80, polysorbate 85,
potassium myristate, potassium palmitate, potassium sorbate,
potassium stearate, propylene glycol, propylene glycol
dicaprylate/dicaprate, propylene glycol dioctanoate, propylene
glycol dipelargonate, propylene glycol laurate, propylene glycol
stearate, propylene glycol stearate SE, PVP, pyridoxine
dipalmitate, quaternium-15, quaternium-18 hectorite, quaternium-22,
retinol, retinyl palmitate, rice (oryza sativa) bran oil, RNA, rose
oil, safflower (carthamus tinctorius) oil, sage (salvia
officinalis) oil, salicylic acid, sandalwood (santalum album) oil,
serine, serum protein, sesame (sesamum indicum) oil, shea butter
(butyrospermum parkii), silk powder, sodium chondroitin sulfate,
sodium DNA, sodium hyaluronate, sodium lactate, sodium palmitate,
sodium PCA, sodium polyglutamate, sodium stearate, soluble
collagen, sorbic acid, sorbitan laurate, sorbitan oleate, sorbitan
palmitate, sorbitan sesquioleate, sorbitan stearate, sorbitol,
soybean (glycine soja) oil, sphingolipids, squalane, squalene,
stearamide MEA-stearate, stearic acid, stearoxy dimethicone,
stearoxytrimethylsilane, stearyl alcohol, stearyl glycyrrhetinate,
stearyl heptanoate, stearyl stearate, sunflower (helianthus annuus)
seed oil, sweet almond (prunus amygdalus dulcis) oil, synthetic
beeswax, tocopherol, tocopheryl acetate, tocopheryl linoleate,
tribehenin, tridecyl neopentanoate, tridecyl stearate,
triethanolamine, tristearin, trimethylsiloxysilicate, urea,
vegetable oil, water, waxes, wheat (triticum vulgare) germ oil, and
ylang ylang (cananga odorata) oil.
[0030] Caramel colorants may be used in certain embodiments of the
present disclosure. Caramels are often prepared by heating
carbohydrates, in the presence of acids, alkalis, or salts. The
chemical products of caramel production are varied and can change
based upon the processes used to produce the caramel. Caramel
colorants are commonly classified in the industry based upon the
processes used to produce the caramel. These classes are summarized
is below in Table 1.
TABLE-US-00001 TABLE 1 Classes of caramel colorants. INS E
Restrictions On Class No. Number Description Preparation Common
uses I 150a E150a Plain caramel, No ammonium or Often used in
caustic caramel, sulfite compounds can whisky or other spirit
caramel; be used during the high proof preparation. alcohols. II
150b E150b Caustic sulfite Sulfite compounds can Often used in
caramel; be used but no cognac, sherry, ammonium compounds or
vinegars. can be present III 150c E150c Ammonia caramel, ammonium
compounds Often used in baker's caramel, may be used, but no beer,
sauces, or confectioner's sulfite compounds may confections.
caramel, beer be present. caramel; IV 150d E150d Sulfite ammonia
Both ammonium Often used in caramel, acid-proof compounds and
sulfite acidic caramel, soft-drink compounds are present.
environments caramel; such as soft drinks.
[0031] Two exemplary caramel colorants that may be used in
embodiments of the present disclosure include DSL4, a Class IV
caramel, and/or SC105, a Class I caramel, both marketed by Sethness
Products Company (Skokie, Ill.).
[0032] Table 2 summarizes the physical properties of DSL4 and its
corresponding physical properties that may be used in various
embodiments of the present disclosure. These physical properties
include the classification of the caramel, the tinctorial power,
the baume of the caramel, the specific gravity of the caramel, the
density of the caramel, the pH of the caramel, the typical color
intensity of the caramel, and/or the quantity of 4-MEI present in
the caramel. Other class IV caramel colorants may be used in
certain embodiments based on having one or more similar physical
properties, such as a low 4-MEI concentration.
TABLE-US-00002 TABLE 2 Summary of physical properties of Class IV
caramel colorants used in certain embodiments of the present
disclosure. Caramel Colorant Physical Properties DSL4 (Sethness
Products Class IV Company of Skokie, IL) Tinctorial Power,
K.sub.0.56 0.370-0.410 Baume @ 60.degree. F. 30.7-31.7 Specific
Gravity @ 60.degree. F. 1.268-1.280 Pounds per gallon @ 60.degree.
F. 10.56-10.66 pH 2.5-3.0 Typical Color Intensity 0.230-0.258 4-MEI
<30 ppm
[0033] Class IV caramel colorants are produced from carbohydrates
that are heated in the presence of both sulfite and ammonium
compounds. In certain embodiments, the Class IV caramel colorants
may have an isoelectric point between pH 0.5 and 2, and may carry a
negative ionic charge above pH 2.
[0034] When caramel colorants are used, such caramel colorants will
typically have a concentration between greater than about 0% (w/w)
and less than or equal to about 15% (w/w). In additional
embodiments, when caramel colorants are used, these colorants have
a concentration between about 0.05% (w/w) and 13% (w/w). In still
other preferred embodiments, when caramel is used as a colorant,
the total caramel present is between about 4% (w/w) and about 5%
(w/w).
[0035] Other colorants may be used in embodiments of the present
disclosure. For example, iron oxide and/or mixtures of iron oxides
can be used in certain embodiments of the present disclosure.
Colorants extracted from plants, such as from beet, rosemary,
annatto, saffron, turmeric, turmeric root, purple sweet potato,
cochineal, carrots, wheat, corn, pepper, spirulina, chlorophyll,
red cabbage, and grape skin may be used in embodiments of the
present disclosure. Other colorants are dyes such as, but not
limited to, Red 4, Red 33, Red 40, Carmine, Blue 1, Yellow 5,
and/or carbon black.
[0036] In order to promote a further understanding of the present
invention and its various embodiments, the following specific
examples are provided. It will be understood that these examples
are illustrative and not limiting of the invention.
Example 1
Preparation of an Improved Sunscreen Composition
Materials and Methods:
[0037] A composition was prepared according to the concentrations
listed in Table 3.
TABLE-US-00003 TABLE 3 Concentration of Ingredients of Sunscreen of
EXAMPLE 1. Ingredient Concentration (w/w) Titanium Dioxide 4.0%
Zinc Oxide 4.0% Alumina 0.3% Shea Butter 0.1% Caprylyl Glycol 0.4%
Cetyl PEG/PPG-10/1 2.5% Dimethicone Cyclopentasiloxane 39.5%
Dimethicone Crosspolymer 1% Disodium EDTA 0.1% Disteardimonium
Hectorite 2.3% Eucalyptus Globulus Leaf 0.01% Extract Fragrance
0.9% Glycerin 5.1% Hexyl Laurate 1.3% Panthenol 0.1% PEG-10
Dimethicone 1.7% Phenoxyethanol 0.4% Polyglyceryl-4 Isostearate 1%
Polymethylsilsesquioxane 2% Porphyra Umbilicalis Extract trace
Silica 3% Squalane 0.1% Stearic Acid 0.4 Terminalia Ferdinandiana
trace (Kakadu Plum) Fruit Extract Tocopheryl Acetate 0.2% Water
Remainder
Results:
[0038] The composition was tested, and the SPF value was calculated
to be about 50. Testing included testing to U.S. FDA (2011) and EU
standards, including sun protection factor testing, water
resistance testing, Broad Spectrum testing, FDA Critical Wavelength
testing, COLIPA Water Resistance testing, ISO24442 UVA-PF &
Critical Wavelength in-vivo testing.
Example 2
Preparation of an Improved Sunscreen Composition
Materials and Methods:
[0039] A composition was prepared according to the concentrations
listed in Table 4.
TABLE-US-00004 TABLE 4 Concentration of Ingredients of Sunscreen of
EXAMPLE 2. Ingredient Concentration (w/w) Titanium Dioxide 3.0%
Zinc Oxide 3.0% Alumina 0.2% Shea Butter 0.1% Caprylyl Glycol 0.3%
Cetyl PEG/PPG-10/1 2.5% Dimethicone Cyclopentasiloxane 43.2%
Dimethicone Crosspolymer 1.0% Disodium EDTA 0.1% Disteardimonium
Hectorite 2.3% Eucalyptus Globulus Leaf 0.01% Extract Fragrance
0.9% Glycerin 5.1% Hexyl Laurate 1% Panthenol 0.1% PEG-10
Dimethicone 1.3% Phenoxyethanol 0.4% Polyglyceryl-4 Isostearate
0.8% Polymethylsilsesquioxane 2.0% Porphyra Umbilicalis Extract
Trace Silica 3.0% Squalane 0.1% Stearic Acid 0.3% Terminalia
Ferdinandiana trace (Kakadu Plum) Fruit Extract Tocopheryl Acetate
0.2% Water Remainder
Results:
[0040] The composition was tested, and the SPF value was calculated
to be about 30.
Example 3
Preparation of an Improved Sunscreen Composition
Materials and Methods:
[0041] A tinted composition including iron oxides was prepared
according to the concentrations listed in Table 5.
TABLE-US-00005 TABLE 5 Concentration of Ingredients of Sunscreen of
EXAMPLE 3. Ingredient Concentration (w/w) Titanium Dioxide 4.0%
Zinc Oxide 4.0% Alumina 0.3% Shea Butter 0.1% Caprylyl Glycol 0.4%
Cetyl PEG/PPG-10/1 2.5% Dimethicone Cyclopentasiloxane 39.5%
Dimethicone Crosspolymer 1% Disodium EDTA 0.1% Disteardimonium
Hectorite 2.3% Eucalyptus Globulus Leaf 0.01% Extract Fragrance
0.9% Glycerin 5.1% Hexyl Laurate 1.3% Iron Oxides 0.4% Panthenol
0.1% PEG-10 Dimethicone 1.7% Phenoxyethanol 0.4% Polyglyceryl-4
Isostearate 1% Polymethylsilsesquioxane 2% Porphyra Umbilicalis
Extract trace Silica 3% Squalane 0.1% Stearic Acid 0.4 Terminalia
Ferdinandiana trace (Kakadu Plum) Fruit Extract Tocopheryl Acetate
0.2% Water Remainder
[0042] An aliquot of the composition according to Table 3 was
applied to the arm of three panelists along with a similar
composition that did not comprise iron oxides.
Results:
[0043] The composition was tested, and the SPF value was calculated
to be about 50.
[0044] It was observed that by adding a small quantity of iron
oxides that the whiteness that is normally associated with titanium
dioxide and/or zinc oxide was markedly reduced. For example, by
including the iron oxides a faint whiteness may be perceived after
initial application, yet the whiteness disappeared and was
virtually invisible after the composition was spread as intended
for use. Optionally, the resulting combination may instead apply a
cosmetic tint to the skin in a selected color and hue to the skin,
as determined by amounts and proportions of pigment used
[0045] Referring now to the figures, FIG. 1 and FIG. 2 each show a
digital image of the forearm is of Panelist A, where a composition
according to EXAMPLE 3, a composition comprising iron oxides, was
applied to the distal (e.g. elbow) portion of Panelist A's forearm.
For comparison a control composition that did not comprise iron
oxides was applied to the proximal (e.g. wrist) portion of Panelist
A's forearm. FIG. 1 shows the compositions after initial
application with a slight amount of spreading having been done as
part of the application process. FIG. 2 shows the compositions
rubbed in, namely as appropriately spread on the skin for use by a
consumer. As can been seen from these digital images, FIG. 1
illustrates that during and after initial application, the
composition containing iron oxides had a faint white tint, but
substantially less white than the control composition. After the
compositions were appropriately spread and rubbed in, FIG. 2
illustrates that the whiteness had disappeared for the composition
containing iron oxides.
[0046] FIG. 3 and FIG. 4 each show a digital image of the forearm
of Panelist B, where a composition according to EXAMPLE 3, a
composition comprising iron oxides, was applied to the distal (e.g.
elbow) portion of Panelist B's forearm. For comparison a
composition that did not comprise iron oxides was applied to the
proximal (e.g. wrist) portion of Panelist B's forearm. FIG. 3 shows
the compositions after initial application with a slight amount of
spreading having been done as part of the application process. FIG.
4 shows the compositions rubbed in, namely as appropriately spread
on the skin for use by a consumer. As can been seen from these
digital images, the composition comprising iron oxides appears less
white than the composition that does not comprise iron oxides. As
can been seen from these digital images, FIG. 3 illustrates that
during and after initial application, the composition containing
iron oxides had a faint white tint, but substantially less white
than the control composition. After the compositions were
appropriately spread and rubbed in, FIG. 4 illustrates that the
whiteness had disappeared for the composition containing iron
oxides.
[0047] FIG. 5 and FIG. 6 each show a digital image of the forearm
of Panelist C, where a composition according to EXAMPLE 3, a
composition comprising iron oxides, was applied to the distal (e.g.
elbow) portion of Panelist C's forearm. For comparison a
composition that did not comprise iron oxides was applied to the
proximal (e.g. wrist) portion of Panelist C's forearm. FIG. 5 shows
the compositions after initial application with a slight amount of
spreading having been done as part of the application process. FIG.
6 shows the compositions rubbed in, namely as appropriately spread
on the skin for use by a consumer. As can been seen from these
digital images, FIG. 5 illustrates that during and after initial
application, the composition containing iron oxides had a faint
white tint, but substantially less white than the control
composition. After the compositions were appropriately spread and
rubbed in, FIG. 6 illustrates that the whiteness had disappeared
for the composition containing iron oxides.
[0048] FIG. 7 shows a digital image of the composition of EXAMPLE
3, and a composition that does not comprise iron oxides.
Example 4
Material and Methods:
[0049] A composition was prepared according to the concentrations
listed in Table 6.
TABLE-US-00006 TABLE 6 Concentration of Ingredients of Sunscreen of
EXAMPLE 3. Ingredient Concentration (w/w) Cyclopentasiloxane 41.9%
Glycerin 5.1% Hexyl Laurate 4.1% Silica 3.0% Zinc Oxide 3.0% Cetyl
PEG/PPG-10/1 2.5% Dimethicone Disteardimonium Hectorite 2.25%
Polymethylsilsesquioxane 2.0% Titanium Dioxide 1.75% PEG-10
Dimethicone 1.1% Dimethicone Crosspolymer 1.0% Fragrance 0.83%
POlyglyceryl-4 Isostearate 0.45% Phenoxyethanol 0.4% Caprylyl
Glycol 0.3% Tocopheryl Acetate 0.2% Stearic Acid 0.18% Alumina
0.13% Panthenol 0.1% Shea Butter 0.1% Squalane 0.1% Disodium EDTA
0.05% Benzyl Benzoate 0.03% Kakuda Plum Fruit Extract 0.005%
Porphyra Umbilicalis Extract 0.005% Eucalyptus Globulus Leaf 0.005%
Extract Coumarin 0.004% Linalool 0.003% Hexyl Cinnamal 0.003%
Benzyl Cinnamate 0.001% Water Remainder
Results:
[0050] The composition of Table 6 was tested, and the SPF value was
calculated to be about 15.
[0051] The uses of the terms "a" and "an" and "the" and similar
references in the context of describing the invention (especially
in the context of the following claims) are to be construed to
cover both the singular and the plural unless otherwise indicated
herein or clearly contradicted by context. Recitation of ranges of
values herein are merely intended to serve as a shorthand method of
referring individually to each separate value falling within the
range, unless otherwise indicated herein, and each separate value
is incorporated into the specification as if it were individually
recited herein. All methods described herein can be performed in
any suitable order unless otherwise indicated herein or otherwise
clearly contradicted by context. The use of any and all examples,
or exemplary language (e.g., "such as") provided herein, is
intended merely to better illuminate the invention and does not
pose a limitation on the scope of the invention unless otherwise
claimed. No language in the specification should be construed as
indicating any non-claimed element as essential to the practice of
the invention.
[0052] While the invention has been illustrated and described in
detail in the drawings and the foregoing description, the same is
to be considered as illustrative and not restrictive in character,
it being understood that only the preferred embodiment has been
shown and described and that all changes and modifications that
come within the spirit of the invention are desired to be
protected. In addition, all references cited herein are indicative
of the level of skill in the art and are hereby incorporated by
reference in their entirety.
* * * * *
References